Single-Atom Alloy Pd-Ag Catalyst for Selective Hydrogenation of Acrolein

Payoli Aich; Haojuan Wei; Bridget Basan; A. Jeremy Kropf; Neil M. Schweitzer; Christopher L. Marshall; Jeffrey T. Miller; Randall Meyer

doi:10.1021/acs.jpcc.5b01357

Single-Atom Alloy Pd-Ag Catalyst for Selective Hydrogenation of Acrolein

Payoli Aich, Haojuan Wei, Bridget Basan, A. Jeremy Kropf, Neil M. Schweitzer, Christopher L. Marshall, Jeffrey T. Miller, Randall Meyer^*

^*Corresponding author for this work

Chemical and Biological Engineering

Research output: Contribution to journal › Article › peer-review

163 Scopus citations

Abstract

Pd-Ag alloy catalysts with very dilute amounts of Pd were synthesized. EXAFS results demonstrated that when the concentration of Pd was as low as 0.01 wt %, Pd was completely dispersed as isolated single atoms in Ag nanoparticles. The activity for the hydrogenation of acrolein was improved by the presence of these isolated Pd atoms due to the creation of sites with lower activation energy for H₂ dissociation. In addition, for the same particle size, the 0.01% Pd/8% Ag alloy nanoparticles exhibited higher selectivity than their monometallic counterparts, suggesting that the Pd atom may act as a site for the favorable bonding of the acrolein molecule for facile hydrogenation of the aldehyde functionality.

Original language	English (US)
Pages (from-to)	18140-18148
Number of pages	9
Journal	Journal of Physical Chemistry C
Volume	119
Issue number	32
DOIs	https://doi.org/10.1021/acs.jpcc.5b01357
State	Published - Jun 14 2015

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
General Energy
Physical and Theoretical Chemistry
Surfaces, Coatings and Films

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title = "Single-Atom Alloy Pd-Ag Catalyst for Selective Hydrogenation of Acrolein",

abstract = "Pd-Ag alloy catalysts with very dilute amounts of Pd were synthesized. EXAFS results demonstrated that when the concentration of Pd was as low as 0.01 wt %, Pd was completely dispersed as isolated single atoms in Ag nanoparticles. The activity for the hydrogenation of acrolein was improved by the presence of these isolated Pd atoms due to the creation of sites with lower activation energy for H2 dissociation. In addition, for the same particle size, the 0.01% Pd/8% Ag alloy nanoparticles exhibited higher selectivity than their monometallic counterparts, suggesting that the Pd atom may act as a site for the favorable bonding of the acrolein molecule for facile hydrogenation of the aldehyde functionality.",

author = "Payoli Aich and Haojuan Wei and Bridget Basan and Kropf, {A. Jeremy} and Schweitzer, {Neil M.} and Marshall, {Christopher L.} and Miller, {Jeffrey T.} and Randall Meyer",

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doi = "10.1021/acs.jpcc.5b01357",

language = "English (US)",

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T1 - Single-Atom Alloy Pd-Ag Catalyst for Selective Hydrogenation of Acrolein

AU - Aich, Payoli

AU - Wei, Haojuan

AU - Basan, Bridget

AU - Kropf, A. Jeremy

AU - Schweitzer, Neil M.

AU - Marshall, Christopher L.

AU - Miller, Jeffrey T.

AU - Meyer, Randall

PY - 2015/6/14

Y1 - 2015/6/14

N2 - Pd-Ag alloy catalysts with very dilute amounts of Pd were synthesized. EXAFS results demonstrated that when the concentration of Pd was as low as 0.01 wt %, Pd was completely dispersed as isolated single atoms in Ag nanoparticles. The activity for the hydrogenation of acrolein was improved by the presence of these isolated Pd atoms due to the creation of sites with lower activation energy for H2 dissociation. In addition, for the same particle size, the 0.01% Pd/8% Ag alloy nanoparticles exhibited higher selectivity than their monometallic counterparts, suggesting that the Pd atom may act as a site for the favorable bonding of the acrolein molecule for facile hydrogenation of the aldehyde functionality.

AB - Pd-Ag alloy catalysts with very dilute amounts of Pd were synthesized. EXAFS results demonstrated that when the concentration of Pd was as low as 0.01 wt %, Pd was completely dispersed as isolated single atoms in Ag nanoparticles. The activity for the hydrogenation of acrolein was improved by the presence of these isolated Pd atoms due to the creation of sites with lower activation energy for H2 dissociation. In addition, for the same particle size, the 0.01% Pd/8% Ag alloy nanoparticles exhibited higher selectivity than their monometallic counterparts, suggesting that the Pd atom may act as a site for the favorable bonding of the acrolein molecule for facile hydrogenation of the aldehyde functionality.

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JO - Journal of Physical Chemistry C

JF - Journal of Physical Chemistry C

IS - 32

ER -

Single-Atom Alloy Pd-Ag Catalyst for Selective Hydrogenation of Acrolein

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